Dab tsi yog qhov chaw ntawm tus engineer lub scraper?
| Ntawm qee cov scrapers, tus kov, ncej thiab hniav tau muab tso rau hauv ib qho, thaum lwm tus muaj cov lus qhia thiab cov tes tuav. | |
 | Lub scraper ncej yog ua los ntawm steel. Nrog scrapers qhov twg cov hniav yog tsim rau hauv lub ncej, tag nrho cov ncej yuav ua los ntawm kev kub ceev steel (HSS), txawm hais tias tsuas yog qhov kawg ntawm lub ncej uas tsim cov hniav yuav raug tshav kub kho thiab tempered rau hauv qhov tseeb high speed steel. | |
 | Tshem tawm scraper hniav yog ua los ntawm kev kub ceev steel los yog tungsten carbide, uas yog txawm nyuaj tshaj li kev kub ceev hlau. | |
Scraper kov cov khoom | ||
 | Lub scraper kov tuaj yeem ua los ntawm cov yas lossis ntoo. Plastic scraper handles yog molded mus rau lub scraper ncej los yog hniav, thaum ntoo tuav yog feem ntau tsim los rau screwed rau lub hlau scraper ncej. | |
 | Dab tsi yog qhov zoo thiab qhov tsis zoo ntawm cov yas thiab ntoo tuav?Tsis zoo li cov hnab yas, cov tes ntoo yog feem ntau hloov tau. Lawv kuj tuaj yeem raug sanded mus rau smoothness yog tias cov splinters tsim rau lawv, los yog kom tuav tau zoo dua. Plastic handles tsis tshua muaj kev sib tsoo los yog tawg, tab sis yog tias lawv ua, lawv yuav nyuaj rau flatten dua. | |
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